Skip to main content
    • Aa
    • Aa

Herbicide Application Strategies for the Control of Rigid Ryegrass (Lolium rigidum) in Wide-Row Faba Bean (Vicia faba) in Southern Australia

  • Samuel G. L. Kleemann (a1) and Gurjeet S. Gill (a1)

Two field experiments were undertaken at Roseworthy, South Australia from 2006 to 2007 to evaluate the performance of herbicide application strategies for the control of herbicide-resistant rigid ryegrass in faba bean grown in wide rows (WR). The standard farmer practice of applying postsowing PRE (PSPE) simazine followed by POST clethodim to faba bean grown in WR provided consistent and high levels of rigid ryegrass control (≥ 96%) and caused a large reduction (P < 0.05) in spike production (≤ 20 spikes m−2) as compared with nontreated control (560 to 722 spikes m−2). Furthermore, this herbicide combination resulted in greatest yield benefits for WR faba bean (723 to 1,046 kg ha−1). Although PSPE propyzamide used in combination with shielded interrow applications of glyphosate or paraquat provided high levels of rigid ryegrass control (≥ 93%), these treatments were unable to reduce ryegrass spike density within the crop row (20 to 54 spikes m−2) to levels acceptable for continued cropping. Furthermore, a yield reduction (13 to 29%) was observed for faba bean in treatments with shielded application of nonselective herbicides and could be related to spray drift onto lower leaves. These findings highlight that shielded interrow spraying in WR faba bean could play an important role in the management of rigid ryegrass in southern Australia. However, timing of shielded interrow applications on weed control, crop safety, and issues concerning integration with more effective early-season control strategies require attention.

De 2006 a 2007, dos experimentos de campo fueron realizados en Roseworthy, al sur de Australia, para evaluar el desempeño de estrategias de aplicación de herbicidas en el control de Lolium rigidum resistente a herbicidas en frijol faba, cultivado en surcos anchos (WR). La práctica estándar de los agricultores de aplicar simazine después de la siembra PRE emergente (PSPE) seguido por clethodim POS emergente (POST) al frijol faba cultivado en WR, proporcionó niveles altos y consistentes de control de L. rigidum (≥96%) y causó una gran reducción (P<0.05) en producción de espigas (≤20 espigas m−2), cuando se comparó con el testigo no tratado (de 560 a 722 espigas m−2). Además, esta combinación de herbicidas proporcionó mayores beneficios en el rendimiento del frijol WR (de 723 a 1046 kg ha−1). Aunque cuando propyzamide PSPE usada en combinación con aplicaciones con pantalla entre surcos de glifosato o paraquat proporcionó altos niveles de control de L. rigidum (≥93%), estos tratamientos no pudieron reducir la densidad de espigas de L. rigidum dentro del surco del cultivo (de 20 a 54 espigas m−2) a niveles aceptables para la producción continua de cultivos. Además, una reducción del rendimiento de13 a 29% se observó en este cultivo en tratamientos con aplicación con pantalla de herbicidas no selectivos, la cual podría estar relacionada a la aspersión no intencional de las hojas inferiores. Estos resultados resaltan que la aspersión con pantalla entre surcos en frijol faba WR podría jugar un papel importante en el manejo de L. rigidum al sur de Australia. Sin embargo, se debe prestar atención al tiempo de las aplicaciones con pantalla entre surcos en el control de malezas, la seguridad del cultivo y los asuntos concernientes a la integración de estrategias de control más eficaz temprano durante el ciclo productivo.

Corresponding author
Corresponding author's E-mail:
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

R. A. Fischer and R. E. Miles 1973. The role of spatial pattern in competition between crop plants and weeds. A theoretical analysis. Math. Biosci. 18:335350.

A. Hashem , R. M. Collins , and D. G. Bowran 2011. Efficacy of interrow weed control techniques in wide row narrow-leaf lupin. Weed Technol. 25:135140.

K. L. Hilgenfeld , A. R. Martin , D. A. Mortensen , and S. C. Mason 2004. Weed management in glyphosate resistant soybean system; weed emergence patterns in relation to glyphosate treatment timing. Weed Technol. 18:277283.

D. Lemerle , B. Verbeek , and N. Coombes 1995. Losses in grain yield of winter crops from Lolium rigidum competition depend on crop species, cultivar and season. Weed Res. 35:503509.

G. K. McDonald 2003. Competitiveness against grass weeds in field pea genotypes. Weed Res. 43:4858.

S. C. Peltzer , A. Hashem , V. A. Osten , M. L. Gupta , A. J. Diggle , G. P. Riethmuller , A. Douglas , J. M. Moore , and E. A. Koetz 2009. Weed management in wide-row cropping systems: a review of current practices and risks for Australian farming systems. Crop Pasture Sci. 60:395406.

K. Rerkasem , W. R. Stern , and N. A. Goodchild 1980. Associated growth of wheat and annual ryegrass. 1. Effect of varying total density and proportion in mixtures of wheat and annual ryegrass. Aust. J. Agric. Res. 31:549658.

R. Wells 1993. Dynamics of soybean growth in variable planting patterns. Agron. J. 85:4448.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Weed Technology
  • ISSN: 0890-037X
  • EISSN: 1550-2740
  • URL: /core/journals/weed-technology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 6 *
Loading metrics...

Abstract views

Total abstract views: 31 *
Loading metrics...

* Views captured on Cambridge Core between 20th January 2017 - 21st September 2017. This data will be updated every 24 hours.